To open window the window is not closed under the impulse of the wind, it is easy to establish a kind of brake, which would not allow it to close, and left at least a crack. On the window and the window frame enough to attach a counter is a small single-pole magnets: pushing away from each other, they will preserve the cracks.
Recommend to read
“IP” AGAINST THE “TIGER”
The appearance on the Eastern front, the new German heavy tanks Pz.VI "Tiger" has made significant adjustments to the plans of the Soviet tank builders. In early April had obtained...
VICTORY – FOR DESIGNERS
In the autumn of last year in Tashkent was held the second personal championship of the USSR on flying sport, which was attended by 53 athletes from almost all the Union republics of our...
